CN114148170A - Automobile L-shaped central control screen and working method thereof - Google Patents

Automobile L-shaped central control screen and working method thereof Download PDF

Info

Publication number
CN114148170A
CN114148170A CN202111564221.8A CN202111564221A CN114148170A CN 114148170 A CN114148170 A CN 114148170A CN 202111564221 A CN202111564221 A CN 202111564221A CN 114148170 A CN114148170 A CN 114148170A
Authority
CN
China
Prior art keywords
resistor
screen
power supply
mcu
capacitor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202111564221.8A
Other languages
Chinese (zh)
Other versions
CN114148170B (en
Inventor
汪治敏
许中华
吴友鑫
周鑫
王翀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Delco Electronic Instrument Co ltd
Original Assignee
Chongqing Delco Electronic Instrument Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Delco Electronic Instrument Co ltd filed Critical Chongqing Delco Electronic Instrument Co ltd
Priority to CN202111564221.8A priority Critical patent/CN114148170B/en
Publication of CN114148170A publication Critical patent/CN114148170A/en
Application granted granted Critical
Publication of CN114148170B publication Critical patent/CN114148170B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/29—Instruments characterised by the way in which information is handled, e.g. showing information on plural displays or prioritising information according to driving conditions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/18—Information management
    • B60K2360/195—Blocking or enabling display functions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/40—Hardware adaptations for dashboards or instruments
    • B60K2360/42—Circuit board features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/40—Hardware adaptations for dashboards or instruments
    • B60K2360/46—Electrical connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

The invention provides an automobile L-shaped central control screen and a working method thereof, wherein the automobile L-shaped central control screen comprises a display driving circuit and an instrument shell, wherein the front side of the instrument shell is vertically provided with a screen shell, the front side of the screen shell is open and is provided with a glass cover plate; the rear side of the screen shell is transversely provided with a circuit shell, a display driving circuit is integrated on the circuit board, a positioning rib is arranged in the circuit shell, and the screen shell is communicated with the circuit shell; the parts, close to the rear side, on the left side and the right side of the circuit shell are both inwards concave, the parts, inwards concave, on the left side and the right side of the circuit shell are convexly provided with guide ribs extending forwards and backwards, and each guide rib is provided with limiting bulges arranged at intervals forwards and backwards; the left side and the right side of the rear side of the circuit shell are provided with buckles at intervals, and the rear side of the circuit shell is also provided with a net port and an RF connector; the top of the circuit shell is detachably connected with a back plate, and a row of fixed mounting holes are formed in the back plate close to the front side. Can stabilize fixed display screen, avoid the display screen to be difficult for receiving the extrusion and destroying all around.

Description

Automobile L-shaped central control screen and working method thereof
Technical Field
The invention relates to the technical field of automobile instruments, in particular to an L-shaped central control screen of an automobile and a working method thereof.
Background
Common automobile display instrument is that the bottom sets up the display screen in the section of thick bamboo that shades, fixes through setting up the buckle around the section of thick bamboo that shades. Under long-time sun irradiation, the shading cylinder easily causes the condition of looseness, thereby causing abnormal sound of an automobile display instrument and influencing the driving comfort level. Simultaneously, because motormeter is fixed for all around, when motormeter received the extrusion, extrude the display screen easily to destroy the display screen.
Disclosure of Invention
The invention particularly innovatively provides an automobile L-shaped central control screen and a working method thereof, which can stably fix a display screen and prevent the periphery of the display screen from being damaged due to extrusion.
In order to achieve the purpose, the invention provides an L-shaped central control screen of an automobile, which comprises a display driving circuit and an instrument shell, wherein the front side of the instrument shell is vertically provided with a screen shell for installing a TFT (thin film transistor) display screen, the front side of the screen shell is open and is provided with a glass cover plate;
the rear side of the screen shell is transversely provided with a circuit shell for mounting a circuit board, a display driving circuit is integrated on the circuit board, a circle of positioning ribs for circumferentially positioning the circuit board are arranged in the circuit shell, and the screen shell is communicated with the circuit shell;
the circuit shell comprises a circuit shell, wherein the left side and the right side of the circuit shell are inwards concavely arranged at the parts close to the rear side to form a convex shape with a large front end and a small rear end, the inwards concavely arranged parts of the circuit shell are used for being inserted into an automobile instrument panel, the insertion depth is limited by the larger part at the front end of the circuit shell, the inwards concavely arranged parts at the left side and the right side of the circuit shell are convexly provided with guide ribs extending forwards and backwards, and each guide rib is provided with a limiting bulge arranged at a distance from the front to the rear; two buckles used for being clamped on an automobile instrument panel are arranged on the left side and the right side of the rear side of the circuit shell at intervals, and a net port and an RF connector are further arranged on the rear side of the circuit shell; the circuit comprises a circuit shell and is characterized in that the top of the circuit shell is detachably connected with a back plate, a row of fixed mounting holes are formed in the back plate close to the front side, the plate body part of the back plate around the fixed mounting holes deflects downwards to form fixed columns, the bottoms of the fixed columns are abutted against the bottom of the circuit shell, and the back plate is fixed on the circuit shell through fixing screws.
In the scheme, the method comprises the following steps: the backboard is concavely provided with a yielding groove with an axis extending left and right.
In the scheme, the method comprises the following steps: the inboard of screen casing is equipped with the pit of stepping down that is used for stepping down for TFT display screen wiring row by the bottom.
In the scheme, the method comprises the following steps: and a plurality of thread mounting holes are formed in the positioning ribs.
In the scheme, the method comprises the following steps: decorative strips are arranged on the left side and the right side of the glass cover plate.
In the scheme, the method comprises the following steps: the display driving circuit comprises an MCU, a deserializer U1, a TFT display screen and an LED lighting driver U7, wherein the power supply driving output end of the MCU decoder is connected with the driving signal input end of a decoder power circuit, and the driving signal output end of the decoder power circuit is connected with the power input end of a deserializer U1 and the IO voltage input end; the MCUTFT power supply driving output end is connected with a TFT power circuit driving signal input end, the MCU screen enabling signal output end is connected with a TFT display screen enabling circuit screen enabling signal input end, the MCUI2C bus transmission end is connected with an LED illumination driver U7I2C bus transmission end, the MCUTFT backlight driving signal output end is connected with a deserializer U1TFT backlight driving signal input end and an LED illumination driver U7TFT backlight driving signal input end, the MCUTFT backlight PWM signal output end is connected with a deserializer U1TFT backlight PWM signal input end and an LED illumination driver U7TFT backlight PWM signal input end, and the MCUTFT backlight fault signal output end is connected with an LED illumination driver U7TFT backlight fault signal input end;
the MCU backlight I2C bus signal transmission end is connected with the LED lighting driver U7 backlight I2C bus signal transmission end;
still include power and mains voltage sampling circuit, the MCU mains voltage sampling drive output is even to mains voltage sampling drive input, the sample termination of power is connected to mains voltage sampling circuit sample termination, the MCU mains voltage sampling signal input is even to mains voltage sampling circuit sampling signal output.
In the scheme, the method comprises the following steps: the voltage stabilizing circuit comprises a diode D3, the anode of the diode D3 is connected with a power supply end of a power supply, the cathode of the diode D3 is connected with a voltage input end VIN of a voltage stabilizer U3 and an enabling end EN of a voltage stabilizer U3, a power output end VOUT of the voltage stabilizer U3 is connected with one end of a capacitor C59 and one end of a resistor R65, the other end of the capacitor C59 is connected with a power ground, one end of the resistor R65 is a 3.3VMCU power supply end, and the other end of the resistor R65 is connected with a 3.3V switch power supply end; a voltage input end VIN of the voltage stabilizer U3 and an enabling end of the voltage stabilizer U3 are connected with one end of a capacitor C60 and one end of a capacitor C61, the other end of the capacitor C60 and the other end of a capacitor C61 are connected with a power ground, and a power ground end GND of the voltage stabilizer U3 is connected with the power ground;
the enabling input end EN of the voltage stabilizer U4 is connected with one end of a resistor R74, one end of a resistor R73 and one end of a resistor R72, the other end of the resistor R74 is connected with a MCU1.2V switch power supply driving output end PTD0, the other end of the resistor R72 is connected with a power ground, a voltage input end VIN of the voltage stabilizer U4 is connected with the other end of a resistor R72, one end of a capacitor C69 and a 3.3V switch power supply end, one end of a capacitor C69 is connected with the power ground, a voltage output end VOUT of the voltage stabilizer U4 outputs 1.2V voltage, one end of a resistor R75 and one end of a capacitor C68 are connected, the other end of the resistor R75 is connected with one end of a resistor R76 and a voltage feedback end ADJ of the voltage stabilizer U4, and the other ends of the resistor R76 and the capacitor C68 are connected with the power ground; the power ground end GND of the voltage regulator U4 is connected with the power ground;
the decoder power supply circuit comprises a resistor R136, wherein one end of the resistor R136 is connected with a power supply driving output end PTA6 of the MCU decoder, the other end of the resistor R136 is connected with one end of a resistor R135 and a base electrode of a triode Q8, the other end of the resistor R135 and an emitter electrode of the triode Q8 are both connected with a power ground, a collector electrode of the triode Q8 is connected with one end of a resistor R138, the other end of the resistor R138 is connected with one end of a resistor R137, one end of a capacitor C98 and a grid electrode of an MOS transistor Q7, a source electrode of the MOS transistor Q7 is connected with one end of a resistor R139, the other end of the resistor R137, the other end of the capacitor C98 and a 3.3V switch power supply end, a drain electrode of the MOS transistor Q7 is connected with the other end of the resistor R139, one end of a resistor R134, one end of an inductor L3 and one end of an inductor L8, the other end of the resistor R134 is connected with the power ground, the other end of the inductor L3 is connected with a power supply input end of a deserializer U1, and the other end of the inductor L8 is connected with a voltage input end of a deserializer U1 IO;
the TFT power supply circuit comprises a resistor R77, one end of the resistor R77 is connected with an MCUTFT power supply driving output end PTD4, the other end of the resistor R77 is connected with one end of a resistor R78 and a base electrode of a triode Q4, the other end of the resistor R78 and an emitter electrode of a triode Q4 are both connected with the power ground, a collector electrode of a triode Q4 is connected with one end of a resistor R79, the other end of a resistor R79 is connected with one end of a resistor R80, one end of a capacitor C45 and a grid electrode of a MOS transistor Q5, a source electrode of the MOS transistor Q5 is connected with the other end of a resistor R80, the other end of the capacitor C45 and a 3.3V switch power supply end, a drain electrode of the MOS transistor Q5 is connected with one end of a resistor R81 and a 3.3VTFT power supply end, and the other end of the resistor R81 is connected with the power ground.
In the scheme, the method comprises the following steps: the power supply circuit comprises one end of a capacitor C64, the anode of a diode D5 and the cathode of a diode D4 which are connected with the first end of the junction bank J3, the anode of the diode D5 is a voltage sampling end of a power supply, the other end of the capacitor C64 is connected with one end of a capacitor C65, the other end of the capacitor C65 and the anode of the diode D4 are both connected with a power ground, the cathode of a diode D5 is connected with one end of an inductor L9 and one end of a capacitor C62, the other end of the capacitor C62 is connected with the power ground, the other end of the inductor L9 is a power supply end and is connected with one end of a capacitor C63, and the other end of the capacitor C63 is connected with the power ground;
the TFT display screen enabling circuit comprises one end of a capacitor C66 connected with the fifth end of the wiring bank J3 and the anode of a diode D6, the fifth end of the wiring bank J3 is connected with a screen awakening signal output end of an automobile, the other end of the capacitor C66 is connected with a power ground, the cathode of the diode D6 is connected with a screen awakening input end of the buck converter U2 and one end of the resistor R56, one end of the resistor R59 and one end of the resistor R55, the other end of the resistor R55 is connected with the power ground, the other end of the resistor R56 is connected with one end of a resistor R57 and the base electrode of a diode Q1, the other end of the resistor R57 and the emitter electrode of the diode Q1 are both connected with the power ground, the collector electrode of a diode Q1 is connected with one end of a resistor R58, one end of a resistor R133 and one end of a resistor R132, the other end of the resistor R133 is connected with the base electrode of a diode Q6, the other end of the resistor R58 is connected with the emitter electrode of a diode Q6 and the power supply end of the 3.3VMCU, the collector electrode of the diode Q6 is connected with one end of a resistor R131, and the other end of the resistor R131 is connected with the other end of the resistor R132; the other end of the resistor R132 is a screen enabling signal output end and is connected with an MCU screen enabling signal input end;
the other end of the resistor R59 is connected with one end of the resistor R60, the other end of the resistor R60 is connected with a power ground, and the other end of the resistor R59 is a screen voltage sampling signal output end and is connected with an MCU screen voltage sampling signal input end.
In the scheme, the method comprises the following steps: the power supply voltage sampling circuit comprises one end of a driving output end connecting resistor R69 for sampling the power supply voltage of the MCU, the other end of the resistor R69 is connected with one end of a resistor R70 and the base electrode of a triode Q3, the emitter electrode of the triode Q3 and the other end of the resistor R70 are both connected with the power supply ground, the collector electrode of the triode Q3 is connected with one end of a resistor R66, the other end of the resistor R66 is connected with one end of a resistor R70 and the base electrode of the triode Q2, the emitter electrode of the triode Q2 is connected with the other end of the resistor R70 and the voltage sampling end of the power supply, the collector electrode of the triode Q2 is connected with one end of a resistor R67, the other end of the resistor R67 is connected with one end of a resistor R68 and the voltage sampling signal input end of the MCU, and the other end of the resistor R68 is connected with the power supply ground;
the power supply bias end of the buck converter U2 is connected with one end of a resistor R52, the other end of a resistor R52 is connected with one end of a capacitor C48, the other end of the capacitor C48 is connected with the cathode of a diode D2, one end of a resistor R64 and the supervisory switching end of the buck converter U2, the anode of the diode D2 is connected with the power ground, the other end of the resistor R64 is connected with one end of the capacitor C57, and the other end of the capacitor C57 is connected with the power ground;
the monitoring switching end of the buck converter U2 is connected with one end of an inductor L6, the other end of the inductor L6 is a 3.3V switch power supply end, the power supply input end of the buck converter U2 is connected with one end of a resistor R115, the other end of the resistor R115 is connected with the power supply end, the enable signal input end of the buck converter U2 is connected with one end of a resistor R53, one end of a resistor R82 and the negative electrode of a switch diode D1, the first positive electrode of the switch diode D1 is connected with the other end of a resistor R82 and the power supply enable signal output end of a MCU3.3V switch, the second positive electrode of the switch diode D1 is connected with one end of a resistor R54, and the other end of the resistor R54 is a screen awakening input end of the buck converter U2; the reverse input end of the buck converter U2 is connected with one end of a resistor R63 and one end of a resistor R61, the other end of the resistor R63 is connected with a power ground, the other end of the resistor R61 is connected with one end of a resistor R62, and the other end of the resistor R62 is connected with the other end of an inductor L6;
the positive electrode of a first low-voltage signal of the deserializer U1 is connected with a first output end of a filter L10, the negative electrode of a first low-voltage signal of the deserializer U1 is connected with a second output end of the filter L10, a first input end of the filter L10 is connected with one end of a protection diode ESD6 and the fourth end of an RF connector J4, the other end of the protection diode ESD6 is connected with a power ground, a second input end of the filter L10 is connected with one end of a protection diode ESD8 and the second end of the RF connector J4, and the other end of the protection diode ESD8 is connected with the power ground;
the positive electrode of a second low-voltage signal of the deserializer U1 is connected with the third output end of the filter L10, the negative electrode of a second low-voltage signal of the deserializer U1 is connected with the fourth output end of the filter L10, the third input end of the filter L10 is connected with one end of a protection diode ESD7 and the third end of an RF connector J4, the other end of the protection diode ESD7 is connected with the power ground, the fourth input end of the filter L10 is connected with one end of a protection diode ESD5 and the first end of the RF connector J4, and the other end of the protection diode ESD5 is connected with the power ground; connecting an external device through a deserializer U1;
the signal output end of the TFT display screen is also connected with the signal output end of the MCUTFT, the clock input end of the TFT display screen is also connected with the clock output end of the MCUTFT, the data transmission end of the TFT display screen is also connected with the data transmission end of the MCUTFT, the reset end of the TFT display screen is also connected with the reset end of the MCUTFT, and the reset end of the TFT display screen is connected with external adjustment equipment through the MCU; the MCUTFT self-test starting output end is connected with the TFT display screen self-test starting input end, the MCUTFT fault signal input end is connected with the TFT display screen fault signal output end, and the MCUTFT passband cut-off frequency transmission end is connected with the TFT display screen passband cut-off frequency transmission end; the MCU backlight sampling signal input end is connected with the TFT display backlight sampling signal output end,
the signal output end of the TFT display screen is also connected with the screen signal output end of a deserializer U1, the clock input end of the TFT display screen is also connected with the screen clock output end of a deserializer U1, the data transmission end of the TFT display screen is also connected with the screen data transmission end of a deserializer U1, and the reset end of the TFT display screen is also connected with the screen reset end of a deserializer U1 and is connected with external adapting equipment through a deserializer U1; the pixel signal output end of the deserializer U1 is connected with the pixel signal input end of the TFT display screen, the lighting signal transmission end of the LED lighting driver U7 is connected with the lighting signal transmission end of the TFT display screen,
the signal output end of the TFT display screen is also connected with the screen signal output end of a wiring bar J1, the clock input end of the TFT display screen is also connected with the screen clock output end of a wiring bar J1, the data transmission end of the TFT display screen is also connected with the screen data transmission end of a wiring bar J1, the reset end of the TFT display screen is also connected with the screen reset end of a wiring bar J1, and the reset end of the TFT display screen is connected with external adaptation equipment through a wiring bar J1;
the voltage input end of the LED illumination driver U7 is connected with one end of a resistor R107, the other end of the resistor R107 is connected with a power supply end of a U7 power supply and one end of an inductor L12, the other end of the inductor L12 is connected with the anode of a diode D8, the cathode of a diode D8 is connected with one end of a resistor R109 and one end of a resistor R86, the other end of the resistor R109 is connected with a backlight signal input end of a TFT display screen, the other end of the resistor R86 is connected with one end of a resistor R87, the other end of the resistor R87 is connected with one end of a resistor R88 and an overvoltage protection end of the LED illumination driver U7, and the other end of the resistor R88 is connected with a power ground;
the working voltage end of the LED illumination driver U7 is connected with one end of a resistor R106 and the cathode of a diode D9, the other end of the resistor R106 is connected with the anode of a diode D9 and one end of a capacitor C85, the other end of the capacitor C85 is connected with one end of a resistor R105 and one end of a capacitor C87, the other end of the resistor R105 and the other end of the capacitor C87 are both connected with the end of an LED illumination driver U7ADR, and the LED signal output end of the LED illumination driver U7 is connected with the signal input end of a connecting line bank J2 LED;
the clock signal output end of the MCU backlight I2C is connected with the clock signal input end of the LED illumination driver U7 backlight I2C, and the data signal transmission end of the MCU backlight I2C is connected with the data signal transmission end of the LED illumination driver U7 backlight I2C.
The invention also provides a working method of the automobile L-shaped central control screen, which comprises the following steps:
s1, after the automobile is powered on, the display instrument is in a standby state;
s2, triggering a screen wake-up key of the automobile, transmitting a screen wake-up signal of the automobile to the MCU through the wiring bank J3, waking up the MCU, and outputting 3.3V voltage through the buck converter U2 to supply power to the MCU;
s3, after the MCU is started, outputting a high level to the buck converter U2, and locking a pin of the buck converter U2 EN;
s4, the MCU receives the detection signal of the screen voltage sampling signal, and if the screen voltage meets the set value, the TFT display screen, the deserializer and the LED lighting driver U7 are initialized;
s5, after initializing the TFT display screen, the deserializer and the LED lighting driver U7, starting the initialization TFT display screen, the deserializer, the touch controller and the LED lighting driver U7, displaying image information of the instrument, and responding to the touch operation of a user;
s6, continuously monitoring the power supply voltage, sending a power supply voltage sampling signal to the power supply voltage sampling circuit by the MCU, and transmitting the detected sampling data of the power supply voltage to the MCU by the voltage sampling circuit;
s7, when the display screen needs to be turned off, the screen sleep key of the automobile is triggered, the screen wake-up signal of the automobile is transmitted to the MCU through the wiring bank J3, the TFT display screen, the deserializer and the LED lighting driver U7 are sequentially turned off, then the output of the buck converter U2 is turned off, the sleep mode is entered, and the MCU is waited to wake up again to enter the normal working mode.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the vertical TFT display screen that sets up of front side, the rear side transversely sets up the circuit casing, can insert header board through the circuit casing and fix, and the buckle that the rear end set up can the chucking, avoids not hard up, and the direction arris strip of setting can lead when inserting, still provides the effect of carrying on the chucking simultaneously, further avoids not hard up. Most of the circuit board shell is inserted into the automobile instrument, supporting force for the TFT display screen can be met, and mounting stability is improved. The circuit case and the meter case communicating with each other can connect the wiring on the circuit board to the TFT display screen.
Drawings
FIG. 1 is an exploded view of an instrument housing of the present invention;
FIG. 2 is a top view of the circuit housing of the present invention;
FIG. 3 is a circuit diagram of voltage regulator U3 of the present invention;
FIG. 4 is a circuit diagram of voltage regulator U4 of the present invention;
FIG. 5 is a circuit diagram of the decoder power supply circuit of the present invention;
FIG. 6 is a circuit diagram of a TFT power supply circuit of the present invention;
FIG. 7 is a circuit diagram of the power supply circuit and TFT display enable circuit of the present invention;
FIG. 8 is a circuit diagram of a supply voltage sampling circuit of the present invention;
FIG. 9 is a circuit diagram of the buck converter U2 of the present invention;
FIG. 10 is a circuit diagram of deserializer U1 of the present invention;
FIG. 11 is a circuit diagram of the inventive terminal block J2;
fig. 12 is a circuit diagram of an LED lighting driver U7 of the present invention;
FIG. 13 is a circuit diagram of the MCU of the present invention;
FIG. 14 is a circuit diagram of the inductor L3 and inductor L8 of the present invention;
fig. 15 is a circuit diagram of inductor L1, inductor L2, inductor L4, and inductor L5 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1-2, an L-shaped central control panel for an automobile comprises a display driving circuit and an instrument housing 3, wherein a screen housing 3a for installing a TFT display screen is vertically arranged at the front side of the instrument housing 3, the front side of the screen housing 3a is open, and a glass cover plate 1 is installed. Decorative strips 2 are arranged on the left side and the right side of the glass cover plate 1. The inner side of the screen shell 3a is provided with a yielding pit 3f for yielding the TFT wiring row.
The rear side of the screen shell 3a is transversely provided with a circuit shell 3b used for installing a circuit board 4, a display driving circuit is integrated on the circuit board 4, a circle of positioning ribs 3e used for circumferentially positioning the circuit board 4 is arranged in the circuit shell 3b, and the screen shell 3a is communicated with the circuit shell 3 b.
The part that leans on the rear side on circuit casing 3 b's the left and right sides all inwards is recessed and establishes, form the little "protruding" font of the big rear end of front end, wherein the part that circuit casing 3b inwards recessed established is used for inserting on the header board, it is spacing to the depth of insertion through the great position of circuit casing 3b front end, the part epirelief that the inside recess of circuit casing 3b left and right sides was established is equipped with the direction arris strip 10 that extends around, spacing arch 9 that the interval set up around all being equipped with on every direction arris strip 10, be equipped with a plurality of screw thread mounting hole on the location arris strip 3 e. Two buckles 8 used for being clamped on an automobile instrument panel are arranged on the left side and the right side of the rear side of the circuit shell 3b at intervals, a net opening 7 and an RF connector J4 are further arranged on the rear side of the circuit shell 3b, a net opening mounting hole 3d used for mounting the net opening 7 and a connector mounting hole 3c used for mounting the RF connector J4 are formed in the rear side of the circuit shell 3b, and the net opening mounting hole 3d and the connector mounting hole 3c are located between the two buckles 8. The top of circuit casing 3b can be dismantled and be connected with backplate 5, is equipped with one row of fixed mounting hole near the front side on backplate 5, and the plate body part that lies in around the fixed mounting hole on backplate 5 squints downwards, forms fixed column 5a, and the bottom of fixed column 5a offsets with the bottom of circuit casing 3b to fix backplate 5 on circuit casing 3b through set screw. The back plate 5 is concavely provided with a yielding groove 6 with an axis extending left and right.
As shown in fig. 3-15, the display driving circuit includes MCUU6, deserializer U1, TFT display screen and LED lighting driver U7, the MCUU6 decoder power supply driving output terminal is connected to the decoder power supply circuit driving signal input terminal, and the decoder power supply circuit driving signal output terminal is connected to the deserializer U1 power supply input terminal and IO voltage input terminal. The MCUU6TFT power supply driving output end is connected with a TFT power supply circuit driving signal input end, the MCUU6 screen enabling signal output end is connected with a TFT display screen enabling circuit screen enabling signal input end, the MCUU6I2C bus transmission end is connected with an LED illumination driver U7I2C bus transmission end, the MCUU6TFT backlight driving signal output end is connected with a deserializer U1TFT backlight driving signal input end and an LED illumination driver U7TFT backlight driving signal input end, the MCUU6TFT backlight PWM signal output end is connected with a deserializer U1TFT backlight PWM signal input end and an LED illumination driver U7TFT backlight PWM signal input end, and the MCUU6TFT backlight fault signal output end is connected with an LED illumination driver U7TFT backlight fault signal input end.
The MCUU6 backlight I2C bus signal transmission terminal is connected with the LED lighting driver U7 backlight I2C bus signal transmission terminal.
The power supply voltage sampling circuit is characterized by further comprising a power supply and a power supply voltage sampling circuit, wherein the sampling driving input end of the power supply voltage sampling circuit is connected with the MCUU6 power supply voltage sampling driving output end, the sampling end of the power supply voltage sampling circuit is connected with the sampling end of the power supply, and the sampling signal output end of the power supply voltage sampling circuit is connected with the MCUU6 power supply voltage sampling signal input end.
In the scheme, the method comprises the following steps: still include voltage stabilizing circuit, voltage stabilizing circuit includes that diode D3's positive pole is connected with the power supply end, stabiliser U3 voltage input end VIN and stabiliser U3 enable end EN are connected to diode D3 negative pole, condenser C59 one end and resistance R65 one end are connected to stabiliser U3 power output end VOUT, condenser C59 other end connection power ground, resistance R65 one end is 3.3VMCU feed end, 3.3V switch feed end is connected to the resistance R65 other end. The voltage input end VIN of the voltage stabilizer U3 and the enable end of the voltage stabilizer U3 are connected with one end of a capacitor C60 and one end of a capacitor C61, the other end of the capacitor C60 and the other end of a capacitor C61 are connected with a power ground, and the power ground end GND of the voltage stabilizer U3 is connected with the power ground.
The enabling input end EN of the voltage stabilizer U4 is connected with one end of a resistor R74, one end of a resistor R73 and one end of a resistor R72, the other end of the resistor R74 is connected with a MCUU61.2V switch power supply driving output end PTD0, the other end of the resistor R72 is connected with a power ground, a voltage input end VIN of the voltage stabilizer U4 is connected with the other end of a resistor R72, one end of a capacitor C69 and a 3.3V switch power supply end, one end of a capacitor C69 is connected with the power ground, a voltage output end VOUT of the voltage stabilizer U4 outputs 1.2V voltage, one end of a resistor R75 and one end of a capacitor C68 are connected, the other end of the resistor R75 is connected with one end of a resistor R76 and a voltage feedback end ADJ of the voltage stabilizer U4, and the other end of the resistor R76 and the other end of the capacitor C68 are both connected with the power ground. Voltage regulator U4 has a power ground terminal GND connected to power ground.
The decoder power supply circuit comprises a resistor R136, one end of the resistor R136 is connected with an MCUU6 decoder power supply driving output end PTA6, the other end of the resistor R136 is connected with one end of a resistor R135 and a base electrode of a triode Q8, the other end of the resistor R135 and an emitter electrode of the triode Q8 are both connected with a power supply ground, a collector electrode of the triode Q8 is connected with one end of a resistor R138, the other end of the resistor R138 is connected with one end of a resistor R137, one end of a capacitor C98 and a grid electrode of a MOS tube Q7, a source electrode of the MOS tube Q7 is connected with one end of a resistor R139, the other end of the resistor R137, the other end of the capacitor C98 and a 3.3V switch power supply end, a drain electrode of the MOS tube Q7 is connected with the other end of the resistor R139, one end of a resistor R134, one end of an inductor L3 and one end of an inductor L8, the other end of the resistor R134 is connected with the power supply ground, the other end of the inductor L3 is connected with a power supply input end of a deserializer U1, and the other end of the inductor L8 is connected with a deserializer U1IO voltage input end.
The TFT power supply circuit comprises a resistor R77, wherein one end of the resistor R77 is connected with an MCUU6TFT power supply driving output end PTD4, the other end of the resistor R77 is connected with one end of a resistor R78 and a base electrode of a triode Q4, the other end of the resistor R78 and an emitter electrode of the triode Q4 are both connected with the power ground, a collector electrode of the triode Q4 is connected with one end of a resistor R79, the other end of the resistor R79 is connected with one end of the resistor R80, one end of a capacitor C45 and a grid electrode of a MOS tube Q5, a source electrode of the MOS tube Q5 is connected with the other end of the resistor R80, the other end of the capacitor C45 and a 3.3V switch power supply end, a drain electrode of the MOS tube Q5 is connected with one end of a resistor R81 and a 3.3VTFT power supply end, and the other end of the resistor R81 is connected with the power ground.
In the scheme, the method comprises the following steps: the power supply circuit comprises a capacitor C64 one end connected with a first end of a connection bank J3, a diode D5 anode and a diode D4 cathode, the diode D5 anode is a voltage sampling end of a power supply, the other end of the capacitor C64 is connected with one end of a capacitor C65, the other end of the capacitor C65 and the anode of the diode D4 are both connected with a power ground, the cathode of a diode D5 is connected with one end of an inductor L9 and one end of a capacitor C62, the other end of the capacitor C62 is connected with the power ground, the other end of the inductor L9 is a power supply end and is connected with one end of a capacitor C63, and the other end of the capacitor C63 is connected with the power ground.
The TFT display screen enabling circuit includes one end of a capacitor C66 connected to the fifth end of the bank J3 and the anode of a diode D6, the fifth end of the wiring bank J3 is connected with a screen awakening signal output end of an automobile, the other end of the capacitor C66 is connected with a power ground, the cathode of the diode D6 is connected with a screen awakening input end of the buck converter U2 and one end of the resistor R56, one end of the resistor R59 is connected with one end of the resistor R55, the other end of the resistor R55 is connected with the power ground, the other end of the resistor R56 is connected with one end of the resistor R57 and the base of the diode Q1, the other end of the resistor R57 and the emitter of the diode Q1 are both connected with the power ground, the collector of the diode Q1 is connected with one end of the resistor R58, one end of the resistor R133 and one end of the resistor R132, the other end of the resistor R133 is connected with the base of the diode Q6, the other end of the resistor R58 is connected with the emitter of the diode Q6 and the power supply end of the 3.3VMCU, the collector of the diode Q6 is connected with one end of the resistor R131, and the other end of the resistor R131 is connected with the other end of the resistor R132. The other end of the resistor R132 is a screen enable signal output end and is connected with a screen enable signal input end of the MCUU 6.
The other end of the resistor R59 is connected with one end of the resistor R60, the other end of the resistor R60 is connected with the power ground, and the other end of the resistor R59 is a screen voltage sampling signal output end and is connected with a screen voltage sampling signal input end of the MCUU 6.
In the scheme, the method comprises the following steps: the power supply voltage sampling circuit comprises a resistor R69 connected with the MCUU6 power supply voltage sampling driving output end, a resistor R69 connected with one end of a resistor R70 and the base of a triode Q3, the emitter of the triode Q3 and the other end of a resistor R70 are both connected with a power supply ground, the collector of the triode Q3 is connected with one end of a resistor R66, the other end of the resistor R66 is connected with one end of a resistor R70 and the base of a triode Q2, the emitter of the triode Q2 is connected with the other end of the resistor R70 and the voltage sampling end of a power supply, the collector of the triode Q2 is connected with one end of a resistor R67, the other end of the resistor R67 is connected with one end of the resistor R68 and the MCUU6 power supply voltage sampling signal input end, and the other end of a resistor R68 is connected with the power supply ground.
The power supply bias end of the buck converter U2 is connected with one end of a resistor R52, the other end of a resistor R52 is connected with one end of a capacitor C48, the other end of the capacitor C48 is connected with the cathode of a diode D2, one end of a resistor R64 and the supervisory switching end of the buck converter U2, the anode of the diode D2 is connected with the power ground, the other end of the resistor R64 is connected with one end of the capacitor C57, and the other end of the capacitor C57 is connected with the power ground.
The voltage-reducing converter U2 supervises that the switching end connects inductance L6 one end, the inductance L6 other end is the 3.3V switch feed end, voltage-reducing converter U2 power input end connecting resistance R115 one end, the resistance R115 other end connects the power feed end, voltage-reducing converter U2 enables signal input end connecting resistance R53 one end, resistance R82 one end and switch diode D1 negative pole, the first anodal connecting resistance R82 other end of switch diode D1 and the MCUU63.3V switch power supply enable signal output end, switch diode D1 second anodal connecting resistance R54 one end, the resistance R54 other end is the screen awakening input end of voltage-reducing converter U2. The reverse input end of the buck converter U2 is connected with one end of a resistor R63 and one end of a resistor R61, the other end of the resistor R63 is connected with the power ground, the other end of the resistor R61 is connected with one end of a resistor R62, and the other end of the resistor R62 is connected with the other end of an inductor L6.
The positive electrode of a first low-voltage signal of the deserializer U1 is connected with the first output end of the filter L10, the negative electrode of a first low-voltage signal of the deserializer U1 is connected with the second output end of the filter L10, the first input end of the filter L10 is connected with one end of the protection diode ESD6 and the fourth end of the RF connector J4, the other end of the protection diode ESD6 is connected with the power ground, the second input end of the filter L10 is connected with one end of the protection diode ESD8 and the second end of the RF connector J4, and the other end of the protection diode ESD8 is connected with the power ground.
The anode of the second low-voltage signal of the deserializer U1 is connected to the third output end of the filter L10, the cathode of the second low-voltage signal of the deserializer U1 is connected to the fourth output end of the filter L10, the third input end of the filter L10 is connected to one end of the protection diode ESD7 and the third end of the RF connector J4, the other end of the protection diode ESD7 is connected to the power ground, the fourth input end of the filter L10 is connected to one end of the protection diode ESD5 and the first end of the RF connector J4, and the other end of the protection diode ESD5 is connected to the power ground. The external device is connected through the deserializer U1.
The signal output end of the TFT display screen is further connected with the MCUU6TFT signal output end, the clock input end of the TFT display screen is further connected with the MCUU6TFT clock output end, the data transmission end of the TFT display screen is further connected with the MCUU6TFT data transmission end, the reset end of the TFT display screen is further connected with the MCUU6TFT reset end, and the TFT display screen is connected with external adaptation equipment through the MCUU 6. The MCUU6TFT self-test starting output end is connected with the TFT display screen self-test starting input end, the MCUU6TFT fault signal input end is connected with the TFT display screen fault signal output end, and the MCUU6TFT passband cut-off frequency transmission end is connected with the TFT display screen passband cut-off frequency transmission end. The MCUU6 backlight sampling signal input end is connected with the TFT display screen backlight sampling signal output end,
the signal output end of the TFT display screen is also connected with the signal output end of a screen of a deserializer U1, the clock input end of the TFT display screen is also connected with the clock output end of a screen of a deserializer U1, the data transmission end of the TFT display screen is also connected with the data transmission end of a screen of a deserializer U1, the reset end of the TFT display screen is also connected with the reset end of a screen of a deserializer U1, and the reset end of the TFT display screen is connected with external adapting equipment through a deserializer U1. The pixel signal output end of the deserializer U1 is connected with the pixel signal input end of the TFT display screen, the lighting signal transmission end of the LED lighting driver U7 is connected with the lighting signal transmission end of the TFT display screen,
the signal output end of the TFT display screen is also connected with the signal output end of a screen of the wiring bar J1, the clock input end of the TFT display screen is also connected with the clock output end of a screen of the wiring bar J1, the data transmission end of the TFT display screen is also connected with the data transmission end of a screen of the wiring bar J1, the reset end of the TFT display screen is also connected with the screen reset end of the wiring bar J1, and the TFT display screen is connected with an external adjusting device through the wiring bar J1.
The voltage input end of the LED illumination driver U7 is connected with one end of a resistor R107, the other end of the resistor R107 is connected with a power supply end of a U7 power supply and one end of an inductor L12, the other end of the inductor L12 is connected with the anode of a diode D8, the cathode of the diode D8 is connected with one end of a resistor R109 and one end of a resistor R86, the other end of the resistor R109 is connected with a backlight signal input end of a TFT display screen, the other end of the resistor R86 is connected with one end of a resistor R87, the other end of the resistor R87 is connected with one end of a resistor R88 and an overvoltage protection end of the LED illumination driver U7, and the other end of the resistor R88 is connected with the power ground.
LED illumination driver U7 operating voltage end connecting resistance R106 one end and diode D9 negative pole, diode D9 positive pole and electric capacity C85 one end are connected to the resistance R106 other end, electric capacity C85 other end connecting resistance R105 one end and electric capacity C87 one end, LED illumination driver U7ADR end is all connected to the resistance R105 other end and the electric capacity C87 other end, LED illumination driver U7LED signal output part connects connection bank J2LED signal input part.
The clock signal output end of the MCUU6 backlight I2C is connected with the clock signal input end of the LED illumination driver U7 backlight I2C, and the data signal transmission end of the MCUU6 backlight I2C is connected with the data signal transmission end of the LED illumination driver U7 backlight I2C.
The invention also provides a working method of the automobile L-shaped central control screen, which comprises the following steps:
s1, after the automobile is powered on, the display instrument is in a standby state;
s2, triggering a screen wake-up key of the automobile, transmitting a screen wake-up signal of the automobile to an MCU (U6) through a wiring bank J3, waking up the MCU (U6), and outputting 3.3V voltage through a buck converter U2 to supply power to the MCU (U6);
s3, after the MCU is started, outputting a high level to the buck converter U2, and locking a pin of the buck converter U2 EN;
s4, the MCU receives the detection signal of the screen voltage sampling signal, and if the screen voltage meets the set value, the TFT display screen, the deserializer and the LED lighting driver U7 are initialized;
s5, after initializing the TFT display screen, the deserializer and the LED lighting driver U7, starting the initialization TFT display screen, the deserializer, the touch controller and the LED lighting driver U7, displaying image information of the instrument, and responding to the touch operation of a user;
s6, continuously monitoring the power supply voltage, sending a power supply voltage sampling signal to the power supply voltage sampling circuit by the MCU, and transmitting the detected sampling data of the power supply voltage to the MCU by the voltage sampling circuit;
s7, when the display screen needs to be turned off, the screen sleep key of the automobile is triggered, the screen wake-up signal of the automobile is transmitted to the MCU (U6) through the connection line J3, the TFT display screen, the deserializer and the LED lighting driver U7 are turned off in sequence, then the output of the buck converter U2 is turned off, the sleep mode is entered, and the MCU (U6) is waited to wake up again and enter the normal working mode.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a accuse screen in car L type which characterized in that: the display device comprises a display driving circuit and an instrument shell (3), wherein a screen shell (3a) used for installing a TFT display screen is vertically arranged on the front side of the instrument shell (3), the front side of the screen shell (3a) is open, and a glass cover plate (1) is installed;
a circuit shell (3b) used for mounting a circuit board (4) is transversely arranged at the rear side of the screen shell (3a), a display driving circuit is integrated on the circuit board (4), a circle of positioning ribs (3e) used for circumferentially positioning the circuit board (4) is arranged in the circuit shell (3b), and the screen shell (3a) is communicated with the circuit shell (3 b);
the parts, close to the rear side, on the left side and the right side of the circuit shell (3b) are both inwards concave to form a convex shape with a large front end and a small rear end, wherein the inwards concave parts of the circuit shell (3b) are used for being inserted into an automobile instrument panel, the insertion depth is limited through the large front end part of the circuit shell (3b), guide ribs (10) extending forwards and backwards are convexly arranged on the inwards concave parts on the left side and the right side of the circuit shell (3b), and limiting bulges (9) arranged at intervals are arranged on each guide rib (10); two buckles (8) used for being clamped on an automobile instrument panel are arranged on the left side and the right side of the rear side of the circuit shell (3b) at intervals, and a net port and an RF connector (J4) are further arranged on the rear side of the circuit shell (3 b); the top of the circuit shell (3b) is detachably connected with a back plate (5), a row of fixed mounting holes are formed in the back plate (5) close to the front side, a plate body part, located around the fixed mounting holes, on the back plate (5) is deflected downwards to form fixed columns (5a), the bottoms of the fixed columns (5a) are abutted to the bottom of the circuit shell (3b), and the back plate (5) is fixed on the circuit shell (3b) through fixing screws.
2. The L-shaped central control screen of the automobile as claimed in claim 1, wherein: the backboard (5) is concavely provided with a yielding groove (6) with an axis extending left and right.
3. The L-shaped central control screen of the automobile as claimed in claim 1, wherein: the inner side of the screen shell (3a) is provided with a yielding pit (3f) used for yielding for the TFT wiring row by the bottom.
4. The L-shaped central control screen of the automobile as claimed in claim 1, wherein: and a plurality of thread mounting holes are formed in the positioning ribs (3 e).
5. The L-shaped central control screen of the automobile as claimed in claim 1, wherein: decorative strips (2) are arranged on the left side and the right side of the glass cover plate (1).
6. The L-shaped central control screen of the automobile as claimed in claim 1, wherein: the display driving circuit comprises an MCU (U6), a deserializer U1, a TFT display screen and an LED lighting driver U7, wherein a power supply driving output end of an MCU (U6) decoder is connected with a driving signal input end of a decoder power circuit, and a driving signal output end of the decoder power circuit is connected with a power supply input end and an IO voltage input end of the deserializer U1; the power supply driving output end of the MCU (U6) TFT is connected with a driving signal input end of a TFT power circuit, the screen enabling signal output end of the MCU (U6) is connected with the screen enabling signal input end of a TFT display screen enabling circuit, the I2C bus transmission end of the MCU (U6) is connected with the U7I2C bus transmission end of an LED illumination driver, the backlight driving signal output end of the MCU (U6) TFT is connected with the backlight driving signal input end of a deserializer U1TFT and the backlight driving signal input end of an LED illumination driver U7TFT, the backlight PWM signal output end of the MCU (U6) TFT is connected with the backlight PWM signal input end of the deserializer U1TFT and the backlight PWM signal input end of the LED illumination driver U7TFT, and the backlight fault signal output end of the MCU (U6) TFT is connected with the backlight fault signal input end of the LED illumination driver U7 TFT;
the MCU (U6) backlight I2C bus signal transmission end is connected with the LED lighting driver U7 backlight I2C bus signal transmission end;
still include power and mains voltage sampling circuit, the drive input of mains voltage sampling circuit sample links MCU (U6) mains voltage sampling drive output, the sample terminal of power is connected to the sample terminal of mains voltage sampling circuit, the output of mains voltage sampling circuit sampling signal links MCU (U6) mains voltage sampling signal input.
7. The automobile L-shaped central control screen according to claim 6, characterized in that: the voltage stabilizing circuit comprises a diode D3, the anode of the diode D3 is connected with a power supply end of a power supply, the cathode of the diode D3 is connected with a voltage input end VIN of a voltage stabilizer U3 and an enabling end EN of a voltage stabilizer U3, a power output end VOUT of the voltage stabilizer U3 is connected with one end of a capacitor C59 and one end of a resistor R65, the other end of the capacitor C59 is connected with a power ground, one end of the resistor R65 is a 3.3VMCU power supply end, and the other end of the resistor R65 is connected with a 3.3V switch power supply end; a voltage input end VIN of the voltage stabilizer U3 and an enabling end of the voltage stabilizer U3 are connected with one end of a capacitor C60 and one end of a capacitor C61, the other end of the capacitor C60 and the other end of a capacitor C61 are connected with a power ground, and a power ground end GND of the voltage stabilizer U3 is connected with the power ground;
the voltage regulator U4 has an enable input end EN connected with one end of a resistor R74, one end of a resistor R73 and one end of a resistor R72, the other end of the resistor R74 is connected with a 1.2V switch power supply driving output end PTD0 of an MCU (U6), the other end of the resistor R72 is connected with a power ground, a voltage input end VIN of the voltage regulator U4 is connected with the other end of a resistor R72, one end of a capacitor C69 and a 3.3V switch power supply end, one end of a capacitor C69 is connected with the power ground, a voltage output end VOUT of the voltage regulator U4 outputs 1.2V voltage and is connected with one end of a resistor R75 and one end of a capacitor C68, the other end of the resistor R75 is connected with one end of a resistor R76 and a voltage feedback end ADJ of the voltage regulator U4, and the other ends of the resistor R76 and the capacitor C68 are both connected with the power ground; the power ground end GND of the voltage regulator U4 is connected with the power ground;
the decoder power supply circuit comprises a resistor R136, wherein one end of the resistor R136 is connected with an MCU (U6) decoder power supply driving output end PTA6, the other end of the resistor R136 is connected with one end of a resistor R135 and a base electrode of a triode Q8, the other end of the resistor R135 and an emitter electrode of the triode Q8 are both connected with a power ground, a collector electrode of the triode Q8 is connected with one end of a resistor R138, the other end of the resistor R138 is connected with one end of a resistor R137, one end of a capacitor C98 and a grid electrode of a MOS tube Q7, a source electrode of the MOS tube Q7 is connected with one end of a resistor R139, the other end of the resistor R137, the other end of the capacitor C98 and a 3.3V switch power supply end, a drain electrode of the MOS tube Q7 is connected with the other end of the resistor R139, one end of a resistor R134, one end of an inductor L3 and one end of an inductor L8, the other end of the resistor R134 is connected with the power ground, the other end of the inductor L3 is connected with a power supply input end of a deserializer U1, and the other end of the inductor L8 is connected with a voltage input end of a deserializer U1 IO;
the TFT power circuit comprises a resistor R77, one end of the resistor R77 is connected with an MCU (U6) TFT power supply driving output end PTD4, the other end of the resistor R77 is connected with one end of a resistor R78 and a base electrode of a triode Q4, the other end of the resistor R78 and an emitter electrode of the triode Q4 are both connected with a power ground, a collector electrode of the triode Q4 is connected with one end of a resistor R79, the other end of the resistor R79 is connected with one end of a resistor R80, one end of a capacitor C45 and a grid electrode of an MOS transistor Q5, a source electrode of the MOS transistor Q5 is connected with the other end of the resistor R80, the other end of the capacitor C45 and a 3.3V switch power supply end, a drain electrode of the MOS transistor Q5 is connected with one end of a resistor R81 and a 3.3VTFT power supply end, and the other end of the resistor R81 is connected with the power ground.
8. The L-shaped central control screen of claim 7, wherein: the power supply circuit comprises one end of a capacitor C64, the anode of a diode D5 and the cathode of a diode D4 which are connected with the first end of the junction bank J3, the anode of the diode D5 is a voltage sampling end of a power supply, the other end of the capacitor C64 is connected with one end of a capacitor C65, the other end of the capacitor C65 and the anode of the diode D4 are both connected with a power ground, the cathode of a diode D5 is connected with one end of an inductor L9 and one end of a capacitor C62, the other end of the capacitor C62 is connected with the power ground, the other end of the inductor L9 is a power supply end and is connected with one end of a capacitor C63, and the other end of the capacitor C63 is connected with the power ground;
the TFT display screen enabling circuit comprises one end of a capacitor C66 connected with the fifth end of the wiring bank J3 and the anode of a diode D6, the fifth end of the wiring bank J3 is connected with a screen awakening signal output end of an automobile, the other end of the capacitor C66 is connected with a power ground, the cathode of the diode D6 is connected with a screen awakening input end of the buck converter U2 and one end of the resistor R56, one end of the resistor R59 and one end of the resistor R55, the other end of the resistor R55 is connected with the power ground, the other end of the resistor R56 is connected with one end of a resistor R57 and the base electrode of a diode Q1, the other end of the resistor R57 and the emitter electrode of the diode Q1 are both connected with the power ground, the collector electrode of a diode Q1 is connected with one end of a resistor R58, one end of a resistor R133 and one end of a resistor R132, the other end of the resistor R133 is connected with the base electrode of a diode Q6, the other end of the resistor R58 is connected with the emitter electrode of a diode Q6 and the power supply end of the 3.3VMCU, the collector electrode of the diode Q6 is connected with one end of a resistor R131, and the other end of the resistor R131 is connected with the other end of the resistor R132; the other end of the resistor R132 is a screen enabling signal output end and is connected with a screen enabling signal input end of an MCU (U6);
the other end of the resistor R59 is connected with one end of the resistor R60, the other end of the resistor R60 is connected with a power ground, and the other end of the resistor R59 is a screen voltage sampling signal output end and is connected with a screen voltage sampling signal input end of an MCU (U6).
9. The L-shaped central control screen of claim 8, wherein: the power supply voltage sampling circuit comprises a power supply voltage sampling driving output end connected with one end of a resistor R69 through an MCU (U6), the other end of the resistor R69 is connected with one end of a resistor R70 and the base of a triode Q3, the other ends of an emitter of the triode Q3 and a resistor R70 are both connected with a power supply ground, a collector of the triode Q3 is connected with one end of the resistor R66, the other end of the resistor R66 is connected with one end of the resistor R70 and the base of the triode Q2, the emitter of the triode Q2 is connected with the other end of the resistor R70 and the voltage sampling end of a power supply, the collector of the triode Q2 is connected with one end of a resistor R67, the other end of the resistor R67 is connected with one end of the resistor R68 and the power supply voltage sampling signal input end of the MCU (U6), and the other end of the resistor R68 is connected with the power supply ground;
the power supply bias end of the buck converter U2 is connected with one end of a resistor R52, the other end of a resistor R52 is connected with one end of a capacitor C48, the other end of the capacitor C48 is connected with the cathode of a diode D2, one end of a resistor R64 and the supervisory switching end of the buck converter U2, the anode of the diode D2 is connected with the power ground, the other end of the resistor R64 is connected with one end of the capacitor C57, and the other end of the capacitor C57 is connected with the power ground;
the monitoring switching end of the buck converter U2 is connected with one end of an inductor L6, the other end of the inductor L6 is a 3.3V switch power supply end, the power supply input end of the buck converter U2 is connected with one end of a resistor R115, the other end of the resistor R115 is connected with the power supply end, the enable signal input end of the buck converter U2 is connected with one end of a resistor R53, one end of a resistor R82 and the cathode of a switch diode D1, the first anode of the switch diode D1 is connected with the other end of a resistor R82 and the power supply enable signal output end of a 3.3V switch of an MCU (U6), the second anode of the switch diode D1 is connected with one end of a resistor R54, and the other end of the resistor R54 is a screen awakening input end of a buck converter U2; the reverse input end of the buck converter U2 is connected with one end of a resistor R63 and one end of a resistor R61, the other end of the resistor R63 is connected with a power ground, the other end of the resistor R61 is connected with one end of a resistor R62, and the other end of the resistor R62 is connected with the other end of an inductor L6;
the positive electrode of a first low-voltage signal of the deserializer U1 is connected with a first output end of a filter L10, the negative electrode of a first low-voltage signal of the deserializer U1 is connected with a second output end of the filter L10, a first input end of the filter L10 is connected with one end of a protection diode ESD6 and the fourth end of an RF connector J4, the other end of the protection diode ESD6 is connected with a power ground, a second input end of the filter L10 is connected with one end of a protection diode ESD8 and the second end of the RF connector J4, and the other end of the protection diode ESD8 is connected with the power ground;
the positive electrode of a second low-voltage signal of the deserializer U1 is connected with the third output end of the filter L10, the negative electrode of a second low-voltage signal of the deserializer U1 is connected with the fourth output end of the filter L10, the third input end of the filter L10 is connected with one end of a protection diode ESD7 and the third end of an RF connector J4, the other end of the protection diode ESD7 is connected with the power ground, the fourth input end of the filter L10 is connected with one end of a protection diode ESD5 and the first end of the RF connector J4, and the other end of the protection diode ESD5 is connected with the power ground; connecting an external device through a deserializer U1;
the signal output end of the TFT display screen is also connected with a signal output end of an MCU (U6) TFT, the clock input end of the TFT display screen is also connected with the clock output end of the MCU (U6) TFT, the data transmission end of the TFT display screen is also connected with the data transmission end of the MCU (U6) TFT, the reset end of the TFT display screen is also connected with the reset end of the MCU (U6) TFT, and the reset end of the TFT display screen is connected with external adjusting equipment through the MCU (U6); the MCU (U6) TFT self-test starting output end is connected with the TFT display screen self-test starting input end, the MCU (U6) TFT fault signal input end is connected with the TFT display screen fault signal output end, and the MCU (U6) TFT passband cutoff frequency transmission end is connected with the TFT display screen passband cutoff frequency transmission end; the MCU (U6) backlight sampling signal input end is connected with the TFT display screen backlight sampling signal output end,
the signal output end of the TFT display screen is also connected with the screen signal output end of a deserializer U1, the clock input end of the TFT display screen is also connected with the screen clock output end of a deserializer U1, the data transmission end of the TFT display screen is also connected with the screen data transmission end of a deserializer U1, and the reset end of the TFT display screen is also connected with the screen reset end of a deserializer U1 and is connected with external adapting equipment through a deserializer U1; the pixel signal output end of the deserializer U1 is connected with the pixel signal input end of the TFT display screen, the lighting signal transmission end of the LED lighting driver U7 is connected with the lighting signal transmission end of the TFT display screen,
the signal output end of the TFT display screen is also connected with the screen signal output end of a wiring bar J1, the clock input end of the TFT display screen is also connected with the screen clock output end of a wiring bar J1, the data transmission end of the TFT display screen is also connected with the screen data transmission end of a wiring bar J1, the reset end of the TFT display screen is also connected with the screen reset end of a wiring bar J1, and the reset end of the TFT display screen is connected with external adaptation equipment through a wiring bar J1;
the voltage input end of the LED illumination driver U7 is connected with one end of a resistor R107, the other end of the resistor R107 is connected with a power supply end of a U7 power supply and one end of an inductor L12, the other end of the inductor L12 is connected with the anode of a diode D8, the cathode of a diode D8 is connected with one end of a resistor R109 and one end of a resistor R86, the other end of the resistor R109 is connected with a backlight signal input end of a TFT display screen, the other end of the resistor R86 is connected with one end of a resistor R87, the other end of the resistor R87 is connected with one end of a resistor R88 and an overvoltage protection end of the LED illumination driver U7, and the other end of the resistor R88 is connected with a power ground;
the working voltage end of the LED illumination driver U7 is connected with one end of a resistor R106 and the cathode of a diode D9, the other end of the resistor R106 is connected with the anode of a diode D9 and one end of a capacitor C85, the other end of the capacitor C85 is connected with one end of a resistor R105 and one end of a capacitor C87, the other end of the resistor R105 and the other end of the capacitor C87 are both connected with the end of an LED illumination driver U7ADR, and the LED signal output end of the LED illumination driver U7 is connected with the signal input end of a connecting line bank J2 LED;
the clock signal output end of the MCU (U6) backlight I2C is connected with the clock signal input end of the LED illumination driver U7 backlight I2C, and the data signal transmission end of the MCU (U6) backlight I2C is connected with the data signal transmission end of the LED illumination driver U7 backlight I2C.
10. A working method of an L-shaped central control screen of an automobile is characterized by comprising the following steps: the method comprises the following steps:
s1, after the automobile is powered on, the display instrument is in a standby state;
s2, triggering a screen wake-up key of the automobile, transmitting a screen wake-up signal of the automobile to an MCU (U6) through a wiring bank J3, waking up the MCU (U6), and outputting 3.3V voltage through a buck converter U2 to supply power to the MCU (U6);
s3, after the MCU is started, outputting a high level to the buck converter U2, and locking a pin of the buck converter U2 EN;
s4, the MCU receives the detection signal of the screen voltage sampling signal, and if the screen voltage meets the set value, the TFT display screen, the deserializer and the LED lighting driver U7 are initialized;
s5, after initializing the TFT display screen, the deserializer and the LED lighting driver U7, starting the initialization TFT display screen, the deserializer, the touch controller and the LED lighting driver U7, displaying image information of the instrument, and responding to the touch operation of a user;
s6, continuously monitoring the power supply voltage, sending a power supply voltage sampling signal to the power supply voltage sampling circuit by the MCU, and transmitting the detected sampling data of the power supply voltage to the MCU by the voltage sampling circuit;
s7, when the display screen needs to be turned off, the screen sleep key of the automobile is triggered, the screen wake-up signal of the automobile is transmitted to the MCU (U6) through the connection line J3, the TFT display screen, the deserializer and the LED lighting driver U7 are turned off in sequence, then the output of the buck converter U2 is turned off, the sleep mode is entered, and the MCU (U6) is waited to wake up again and enter the normal working mode.
CN202111564221.8A 2021-12-20 2021-12-20 Automobile L-shaped central control screen and working method thereof Active CN114148170B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111564221.8A CN114148170B (en) 2021-12-20 2021-12-20 Automobile L-shaped central control screen and working method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111564221.8A CN114148170B (en) 2021-12-20 2021-12-20 Automobile L-shaped central control screen and working method thereof

Publications (2)

Publication Number Publication Date
CN114148170A true CN114148170A (en) 2022-03-08
CN114148170B CN114148170B (en) 2023-07-18

Family

ID=80451573

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111564221.8A Active CN114148170B (en) 2021-12-20 2021-12-20 Automobile L-shaped central control screen and working method thereof

Country Status (1)

Country Link
CN (1) CN114148170B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115946623A (en) * 2022-12-09 2023-04-11 重庆德科电子仪表有限公司 Instrument display device convenient to installation and working circuit thereof

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258875B3 (en) * 2002-12-17 2004-04-08 Daimlerchrysler Ag Automobile component fixing device has fixing located in inaccessible position provided by pivoted catch rotated by rotary lever located in accessible position
WO2013152530A1 (en) * 2012-04-12 2013-10-17 深圳市华星光电技术有限公司 Led backlight driving circuit, liquid crystal display device, and driving method
CN204340698U (en) * 2014-11-28 2015-05-20 重庆矢崎仪表有限公司 Automobile instrument outer casing and backlight assembly
US20150154916A1 (en) * 2013-11-06 2015-06-04 Shenzhen China Star Optoelectronics Technology Co. Ltd. Liquid crystal display device and backlight driving method thereof
CN108556632A (en) * 2018-06-10 2018-09-21 重庆三三电器股份有限公司 A kind of intelligence TFT instrument screen intensity wake-up circuits and its control method
CN109166546A (en) * 2018-09-30 2019-01-08 广州小鹏汽车科技有限公司 A kind of display screen circuit and the middle control screen system including display screen circuit
CN210271544U (en) * 2019-08-07 2020-04-07 德彩视界(深圳)显示服务有限公司 Display screen support frame
CN111688607A (en) * 2019-03-14 2020-09-22 比亚迪股份有限公司 Integrated controller, controller instrument, instrument desk and vehicle
CN212685256U (en) * 2020-06-30 2021-03-12 上汽通用五菱汽车股份有限公司 Vehicle combination meter and vehicle
CN112776742A (en) * 2020-12-22 2021-05-11 重庆德科电子仪表有限公司 Automobile central control display screen system
US20210188090A1 (en) * 2019-12-24 2021-06-24 Samsung Electronics Co., Ltd. Electronic device including display and operating method thereof
CN113320387A (en) * 2021-05-25 2021-08-31 宁波东发塑料制品有限公司 Automobile central control panel shell assembly

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258875B3 (en) * 2002-12-17 2004-04-08 Daimlerchrysler Ag Automobile component fixing device has fixing located in inaccessible position provided by pivoted catch rotated by rotary lever located in accessible position
WO2013152530A1 (en) * 2012-04-12 2013-10-17 深圳市华星光电技术有限公司 Led backlight driving circuit, liquid crystal display device, and driving method
US20150154916A1 (en) * 2013-11-06 2015-06-04 Shenzhen China Star Optoelectronics Technology Co. Ltd. Liquid crystal display device and backlight driving method thereof
CN204340698U (en) * 2014-11-28 2015-05-20 重庆矢崎仪表有限公司 Automobile instrument outer casing and backlight assembly
CN108556632A (en) * 2018-06-10 2018-09-21 重庆三三电器股份有限公司 A kind of intelligence TFT instrument screen intensity wake-up circuits and its control method
CN109166546A (en) * 2018-09-30 2019-01-08 广州小鹏汽车科技有限公司 A kind of display screen circuit and the middle control screen system including display screen circuit
CN111688607A (en) * 2019-03-14 2020-09-22 比亚迪股份有限公司 Integrated controller, controller instrument, instrument desk and vehicle
CN210271544U (en) * 2019-08-07 2020-04-07 德彩视界(深圳)显示服务有限公司 Display screen support frame
US20210188090A1 (en) * 2019-12-24 2021-06-24 Samsung Electronics Co., Ltd. Electronic device including display and operating method thereof
CN212685256U (en) * 2020-06-30 2021-03-12 上汽通用五菱汽车股份有限公司 Vehicle combination meter and vehicle
CN112776742A (en) * 2020-12-22 2021-05-11 重庆德科电子仪表有限公司 Automobile central control display screen system
CN113320387A (en) * 2021-05-25 2021-08-31 宁波东发塑料制品有限公司 Automobile central control panel shell assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115946623A (en) * 2022-12-09 2023-04-11 重庆德科电子仪表有限公司 Instrument display device convenient to installation and working circuit thereof
CN115946623B (en) * 2022-12-09 2024-04-09 重庆德科电子仪表有限公司 Instrument display device convenient to installation and working circuit thereof

Also Published As

Publication number Publication date
CN114148170B (en) 2023-07-18

Similar Documents

Publication Publication Date Title
CN114148170A (en) Automobile L-shaped central control screen and working method thereof
CN216697697U (en) Waterproof dustproof LED display screen
CN215300938U (en) 5G edge intelligent gateway
CN209543778U (en) A kind of display equipment
CN212933515U (en) Software simulation serial data transmission device
JP3142901U (en) Mounting bracket for wall-mounted TV with power supply function
CN209103704U (en) A kind of screen cabinet display device
CN215581435U (en) USB3.0 output picture divider
CN204716096U (en) A kind of electronic visual, optics two purpose door lens
CN113080577B (en) Bracelet is dressed to intelligence of supplementary blind person's trip
CN101494723B (en) Display screen drive box for flat-plate television set
CN218330268U (en) Wireless temperature measuring equipment for monitoring inside switch cabinet
CN201439681U (en) Digital peep hole device
CN205070237U (en) Automatically controlled cabinet of small -size direct current of drawer type modularization
CN213847293U (en) Waterproof structure of recorder capable of saving transverse width space
CN216451588U (en) Circuit board of intelligent small-sized household appliance product line
CN220913748U (en) Ceiling screen data wireless transmission circuit
CN211610077U (en) Combined screwdriver for children orthopedics
CN212809737U (en) 7-inch belt touch liquid crystal display driving control device
CN207960177U (en) A kind of handle fixing device
CN218628432U (en) Wireless intelligent acquisition device
CN215764063U (en) Recorder convenient to install
CN216080266U (en) Intelligence house temperature management and control device
CN219941341U (en) Adjustable loading frame for sterilizer
CN212719522U (en) Intelligent charging desk lamp of integral type

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant